Nut-lock.



- i UNTTEE sTATEs PATENT oEFIoE.

ALBERT e. RUsREA, or BRUNDIDGR, ARKAivsAs, AssIeNoR or ONE-HALE rojnoss,THOMPSON oo., or BERRE, ARKANSAS.

NUT-LOCK.

Specification vof Letters Patent.

Patented June 6,1911.

Application mea May 29,1909. serial No. 499,251.

To all whom tt may concern:

Be it known that I, ALBERT Gr. BUsBEA', a citizen of the United States,residing at Brundidge, in the county of White and State of Arkansas,have invented a new and useful Nut-Lock, of which the following is aspecification.

It is the obj ect of the present invention to provide an improvedconstruction of nut lock and the invention resides particularly in theprovision of an improved construction of nut locking washer or collar,it being the aim of theinvention to provide for locking of a nut at anypoint to which it may be 'Y a cylindrical collar having a polygonalopening` therethrough to receive the polygonal portion of the bolt andalso more or less of the threaded portion thereof. Ordinarily, suchwashers are formed fro-m sheet metal and when under stress, theiropenings are liable to be reamed so as to permit of free rotation of thenut upon the bolt or of rotationof the bolt with respect to the nut butby embodying the washer in a lock collar, the bearing afforded issufcient to entirely obviate any reaming of the opening through thecollar.

In the accompanying drawings, Figure 1 is a view showing the bolt inelevation and the nut and lock collar in vertical section.

Fig. 2 is a vertical transverse sectional view on the line 2 2 of Fig. 1looking in the direction indicated by the arrows, and Fig. 3 is aperspective vie-w in detail ofthe lock collar.

In the drawings, the bolt, nut, and locking collar are shown asassembled with two elements 5 to be secured together and the said bolthas its shank indicated by the numeral 6 and formed with a head 7, theshank being threaded at the other end as at 8 and being of polygonalformation inwardly of its threaded portion as indicated by the numeral9. It will be observed that the shank of the bolt, throughout itsthreaded portion,

is of a diameter' slightly less than throughout its polygonal portion.

The lock washer or collar embodying the present invention is in the formof a collar 10 which is cylindrical and is formed with a polygonalopening 11 which receives the polygonal portion 9 of the bolt shank 6and upon its circumferential surface, this collar is formed with aradially directed circumscribing flange 12 the peripheral edge of whichis concentric with respect to the said circumferential surface of thecollar. As clearly shown in Fig. 1 of the drawings, this collar 10 is ofsuch length or width as to embrace not only a portion of the polygonalportion ofthe bolt shank but also more or less of the threaded portion 8thereof so that when the nut, indicated by the numeral 13, is threadedupon the bolt, it may be tightened to the full extent and withoutlikelihood of its threads coming in engagement with the said polygonalportion of the bolt shank. It will further be understood that owing tothe large amount of bearing surface presented by the collar to thepolygonal. portion of the bolt shank, the wall of the opening throughthe collar will not be liable to become reamed upon stress being placedupon the bolt or the nut thereon.

After the nut 13 has been threaded upon the bolt until -it comes incontact with that face of the collar at which the flange 12 is formed,this flange is bent down at one or more points so as to bear against oneor more faces of the nut 13 and thereby hold the nut against rotationupon the bolt. -It will be understood of course that by having thecollar of cylindrical form the flange 12 may be bent down intoengagement with the faces of the nut at any desired point or in otherwords regardless of the position to which the nut is adjusted; this istrue also whether the nut be formed with four, six, or any number ofsides or faces. Y

What is claimed is In a device of the class described, a bolt having ashank threaded throughout a portion of its length and polygonalthroughout an adjacent portion of its length, a lock sleeve having apolygonal bore to receive the polygonal and threaded portions of theshank, the sleeve being formed with a flange at that end adjacent thethreaded portion of my own, I have hereto affixed my signature theshank, and a nut threaded upon the in the presence of two Witnesses.

shank and having a face bearing against the his end of the lockingsleeve at which the flange ALBERT X Gr. BUSBEA.

is formed, said face of the nut being plane, mak the flange having aportion bent into en- Witnesses: gagement with the side of the nut. J.E. TURNAGE,

In testimony that I claim the foregoing as G. H. MILLS.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

